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REL37B plugs &

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Ted Waltman

REL37B plugs &

Post by Ted Waltman » Sat Feb 18, 2012 9:46 am

Folks...

I was researching whether there are any less expensive plugs out there.
I ran across the following excerpt in an old EAA chapter article. I
emailed the guy to follow up on his original article.

Ted
-----------------


A quick look at the Aircraft Spruce catalog showed that the price of new
REJ38 and REL37B plugs that fit the 14mm holes in the cylinder heads had
jumped from about $17.00 a plug to almost $30.00. Serious sticker shock!
I wasn't quite ready to shell out $120.00 for new plugs. So, I bought
four new Bosch W8AC automotive plugs from my friends Steve and Linda
Bennett at Great Plains Aircraft Supply for a total of $8.00. Several
years ago, I had purchased Steve's spark plug adapters that slip over
the Bosch plugs and allow the use of the standard Slick shielded
ignition wires that are on the airplane. I had used them for a while,
but didn't like the spark noise in the radio, and had switched back
aircraft plugs. I thought that I could tolerate the RF noise after
converting back to the Bosch plugs, but it still bugged me that it was
there, as it noticeably degraded my Comm reception. I needed to come to
a solution. After doing a bit of reading, and poking around on the
Internet, I came to the conclusion that maybe resistor-type spark plugs
might do the trick. I found that the Champion 327 (RL87YC) plug is a
direct replacement for the W8AC and it has a resistor. Today, I went to
my friendly NAPA store and bought four of them for $7.53. I then went
out to the airport and installed them. (It was foggy and rainy, so it
was a good day to do maintenance.) And guess what? They work.

-----Original Message-----
From: FredKeip@aol.com [mailto:FredKeip@aol.com]
Sent: Tuesday, November 23, 2004 9:57 PM
To: tedwaltman@i1ci.com
Subject: Re: Follow up on your EAA article on REL37B plugs


Ted,
I'm still using the Champion RL87YC plugs in my Sonerai IIL. The engine
is an 1807cc VW conversion, and those plugs are the recommended Champion
plugs for the VW engine. As far as problems go, I really haven't had
any significant ones. I still get a little bit of spark noise, and I
have to keep an eye on the gaps because the plugs are not really set up
for the .016" gap required for the Slick magneto. You have to pinch the
outer electrode down a bit to get that gap, so as wear occurs, that gap
opens more quickly than if the gap was at .028".

The adapters that I use are supplied by Great Plains Aircraft Supply
(www.gpasc.com). They are machined from billet aluminum and are
configured to accept the standard 5/8" threaded end on the Slick
ignition harness. I'd strongly recommend them along with the Champion
plugs. At around $2.00 a plug, you can install a new set every year at
the annual inspection for less than the cost of one REL37B. I guess the
only question I would have about using the RL87YC plug in the M14P would
be if the heat range is correct. If not, you could check to see if
Champion makes the plug in other ranges.

I hope this helps.
Fred




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George Coy

REL37B plugs &

Post by George Coy » Sat Feb 18, 2012 9:46 am

About Spark Plugs, there may be some other changes in the wind.

Champion has recently expressed an interest in making a 14 mm plug for the
Russian engines. As you may know the REL37B is a little too cold and tends
to load up faster than the Russian plugs.

We are in discussions with the Romanian Engine factory now about supplying
engines with the 18 mm plug. They have several different heat range champion
and auburn plugs that we sent to them for testing. They are building up some
cylinders that take the 18 mm plug and testing things on the test stand. I
expect a report in a few months. We expect to order future engines with the
18 mm plug.

Lastly, those of us who operated Franklin engines on Sea Bees know of the
metal shielding adapter that was used by the military on Jeeps and the like.
They were made by Livingston in Redding CA. If you can find some they are
great as they accept the small auto spark plugs and have full shielding.

If needed we have in inventory the adapters that covert the Russian lead
ends to U.S. size threads. We also have New lead ends that will go on the
Russian harness and are the right size for U.S. spark plugs.


By the way be thankful you do not have to deal with 12 mm plugs as we do
with the LOM engines on the Zlin aircraft!!!!!!

George Coy
President
Gesoco Industries Inc.
629 Airport Rd.
Swanton, VT 05488
TEL 802-868-5633
FAX 802-868-4465
Web Site www.gesoco.com
e-mail George@gesoco.com
Franklin County Airport (KFSO)

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of Ted
Waltman
Sent: Wednesday, November 24, 2004 8:09 AM
To: Murphy List
Subject: REL37B plugs &


Folks...

I was researching whether there are any less expensive plugs out there.
I ran across the following excerpt in an old EAA chapter article. I
emailed the guy to follow up on his original article.

Ted
-----------------


A quick look at the Aircraft Spruce catalog showed that the price of new
REJ38 and REL37B plugs that fit the 14mm holes in the cylinder heads had
jumped from about $17.00 a plug to almost $30.00. Serious sticker shock!
I wasn't quite ready to shell out $120.00 for new plugs. So, I bought
four new Bosch W8AC automotive plugs from my friends Steve and Linda
Bennett at Great Plains Aircraft Supply for a total of $8.00. Several
years ago, I had purchased Steve's spark plug adapters that slip over
the Bosch plugs and allow the use of the standard Slick shielded
ignition wires that are on the airplane. I had used them for a while,
but didn't like the spark noise in the radio, and had switched back
aircraft plugs. I thought that I could tolerate the RF noise after
converting back to the Bosch plugs, but it still bugged me that it was
there, as it noticeably degraded my Comm reception. I needed to come to
a solution. After doing a bit of reading, and poking around on the
Internet, I came to the conclusion that maybe resistor-type spark plugs
might do the trick. I found that the Champion 327 (RL87YC) plug is a
direct replacement for the W8AC and it has a resistor. Today, I went to
my friendly NAPA store and bought four of them for $7.53. I then went
out to the airport and installed them. (It was foggy and rainy, so it
was a good day to do maintenance.) And guess what? They work.

-----Original Message-----
From: FredKeip@aol.com [mailto:FredKeip@aol.com]
Sent: Tuesday, November 23, 2004 9:57 PM
To: tedwaltman@i1ci.com
Subject: Re: Follow up on your EAA article on REL37B plugs


Ted,
I'm still using the Champion RL87YC plugs in my Sonerai IIL. The engine
is an 1807cc VW conversion, and those plugs are the recommended Champion
plugs for the VW engine. As far as problems go, I really haven't had
any significant ones. I still get a little bit of spark noise, and I
have to keep an eye on the gaps because the plugs are not really set up
for the .016" gap required for the Slick magneto. You have to pinch the
outer electrode down a bit to get that gap, so as wear occurs, that gap
opens more quickly than if the gap was at .028".

The adapters that I use are supplied by Great Plains Aircraft Supply
(www.gpasc.com). They are machined from billet aluminum and are
configured to accept the standard 5/8" threaded end on the Slick
ignition harness. I'd strongly recommend them along with the Champion
plugs. At around $2.00 a plug, you can install a new set every year at
the annual inspection for less than the cost of one REL37B. I guess the
only question I would have about using the RL87YC plug in the M14P would
be if the heat range is correct. If not, you could check to see if
Champion makes the plug in other ranges.

I hope this helps.
Fred




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Rick Harper

REL37B plugs &

Post by Rick Harper » Sat Feb 18, 2012 9:46 am

G'day Guys !

When you fit an LSE Ignition ... they supply the plug adaptors ...
and give you MOTORCYCLE plugs !!! :o)

So I figured "if it's good enough for the LSE - then they're good enough
for the magneto as well !"

So I now run 8 NGK motorcycle spark plugs - been going for 300 hrs now
on 'em too !
( at $2.25 Aus each - I throw 'em away at 50 hrs)

Rick Harper
541 R
----- Original Message -----
From: Ted Waltman
To: Murphy List
Sent: Thursday, November 25, 2004 12:09 AM
Subject: REL37B plugs &


Folks...

I was researching whether there are any less expensive plugs out
there.
I ran across the following excerpt in an old EAA chapter article. I
emailed the guy to follow up on his original article.

Ted
-----------------


A quick look at the Aircraft Spruce catalog showed that the price of
new
REJ38 and REL37B plugs that fit the 14mm holes in the cylinder heads
had
jumped from about $17.00 a plug to almost $30.00. Serious sticker
shock!
I wasn't quite ready to shell out $120.00 for new plugs. So, I bought
four new Bosch W8AC automotive plugs from my friends Steve and Linda
Bennett at Great Plains Aircraft Supply for a total of $8.00. Several
years ago, I had purchased Steve's spark plug adapters that slip over
the Bosch plugs and allow the use of the standard Slick shielded
ignition wires that are on the airplane. I had used them for a while,
but didn't like the spark noise in the radio, and had switched back
aircraft plugs. I thought that I could tolerate the RF noise after
converting back to the Bosch plugs, but it still bugged me that it was
there, as it noticeably degraded my Comm reception. I needed to come
to
a solution. After doing a bit of reading, and poking around on the
Internet, I came to the conclusion that maybe resistor-type spark
plugs
might do the trick. I found that the Champion 327 (RL87YC) plug is a
direct replacement for the W8AC and it has a resistor. Today, I went
to
my friendly NAPA store and bought four of them for $7.53. I then went
out to the airport and installed them. (It was foggy and rainy, so it
was a good day to do maintenance.) And guess what? They work.

-----Original Message-----
From: FredKeip@aol.com [mailto:FredKeip@aol.com]
Sent: Tuesday, November 23, 2004 9:57 PM
To: tedwaltman@i1ci.com
Subject: Re: Follow up on your EAA article on REL37B plugs


Ted,
I'm still using the Champion RL87YC plugs in my Sonerai IIL. The
engine
is an 1807cc VW conversion, and those plugs are the recommended
Champion
plugs for the VW engine. As far as problems go, I really haven't had
any significant ones. I still get a little bit of spark noise, and I
have to keep an eye on the gaps because the plugs are not really set
up
for the .016" gap required for the Slick magneto. You have to pinch
the
outer electrode down a bit to get that gap, so as wear occurs, that
gap
opens more quickly than if the gap was at .028".

The adapters that I use are supplied by Great Plains Aircraft Supply
(www.gpasc.com). They are machined from billet aluminum and are
configured to accept the standard 5/8" threaded end on the Slick
ignition harness. I'd strongly recommend them along with the Champion
plugs. At around $2.00 a plug, you can install a new set every year
at
the annual inspection for less than the cost of one REL37B. I guess
the
only question I would have about using the RL87YC plug in the M14P
would
be if the heat range is correct. If not, you could check to see if
Champion makes the plug in other ranges.

I hope this helps.
Fred




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